CN106371074B - A serial multi-channel array ground penetrating radar timing control device and method - Google Patents

A serial multi-channel array ground penetrating radar timing control device and method Download PDF

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CN106371074B
CN106371074B CN201611098515.5A CN201611098515A CN106371074B CN 106371074 B CN106371074 B CN 106371074B CN 201611098515 A CN201611098515 A CN 201611098515A CN 106371074 B CN106371074 B CN 106371074B
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CN106371074A (en
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彭宇
耿红岩
崔振兴
赵翠荣
孙兆峰
郭福强
杨振涛
施兴华
黄素贞
胡通海
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CETC 22 Research Institute
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

The invention discloses a kind of series connection multichannel array Ground Penetrating Radar time sequence control device and methods, the device includes: microcomputer, the step motion control module being electrically connected by FPGA with microcomputer, after microcomputer issues channel relevant configured parameter to FPGA, shooting sequence parameter and reception sequence parameter are handed down to transmitting gating switch and reception gating switch respectively, the relevant configured parameter in channel are handed down to step motion control module etc. by FPGA.Series connection multichannel array Ground Penetrating Radar time sequence control device disclosed in this invention and method, using the N channel acquisition system of tandem timing control mode only by a step motion control module, one analog-digital converter and the gating switch on 3 roads N composition, the antenna echo in N number of channel is together in series by control gating switch, each channel time-sharing work within a scan period.In the case where less port number (not more than 8), component number is less, has the characteristics that small in size, at low cost, small power consumption and control are flexible, can control transmitting unit and receiving unit work in array in any order.

Description

A kind of series connection multichannel array Ground Penetrating Radar time sequence control device and method
Technical field
The present invention relates to engineering geophysics field more particularly to a kind of series connection multichannel array Ground Penetrating Radar time sequence control devices And method.
Background technique
Multichannel array Ground Penetrating Radar can expand scanning area, by combining multiple-look technique and SAR processing technique can be with It realizes Imaging of Underground Objects, is the more Detection Techniques in forward position in engineering geophysics field.The timing control of array Ground Penetrating Radar at present System mostly uses control mode in parallel, the control mode be by N number of independent step motion control module and N number of analog-digital converter simultaneously Connection, forms N number of acquisition channel, each acquisition channel is made of a stepping sampling control module and an analog-digital converter, Each acquisition channel time-sharing work within a scan period.Although Parallel Control mode has timing control simply and more The advantages of can be realized high speed acquisition in the case where port number, but its that there is also hardware costs is higher, system bulk is big and function Consume big disadvantage.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of series connection multichannels small in size, at low cost and small power consumption Array Ground Penetrating Radar time sequence control device and method.
The present invention adopts the following technical scheme:
A kind of series connection multichannel array Ground Penetrating Radar time sequence control device, it is improved in that the device includes: Microcomputer, the step motion control module being electrically connected by FPGA with microcomputer, microcomputer issue channel correlation and match After parameter is set to FPGA, FPGA is respectively handed down to shooting sequence parameter and reception sequence parameter transmitting gating switch and receives and selects It opens up pass, the relevant configured parameter in channel be handed down to step motion control module, step motion control module generates match related to the channel Set transmitting trigger signal sequence that parameter matches and receive trigger signal sequence, wherein transmitting trigger signal sequence by two groups with Upper transmitting trigger signal is composed in series, receives trigger signal sequence is composed in series by reception trigger signal more than two；It is connected with When the transmitting gating switch of two or more transmitters is electrically connected with FPGA, the synchronization signal from FPGA occurs, transmitting gating is opened It closes the shooting sequence that sets according to FPGA to distribute each transmitting trigger signal to corresponding transmitter, above-mentioned transmitter is and array Antenna electrical connection, the reception gating switch for being connected with two or more receivers is electrically connected with FPGA, the synchronization signal from FPGA When appearance, receives the reception sequence that gating switch is set according to FPGA and distribute each reception trigger signal to corresponding receiver, on The receiver stated is electrically connected with array antenna, and echo gating switch in sequence connects the echo-signal from receiver, Antenna echo after series connection is converted to digital signal by analog-digital converter, and FPGA is each according to shooting sequence and reception sequence notation Channel echo-signal, the content of label are that the antenna echo in the channel is generated by which transmitter and which receiver , microcomputer is according to the every channel antenna echo of the corresponding pickup of the information marked and is sent to corresponding channel data display window Display output.
Further, the quantity of the transmitter and receiver is identical, is to be less than or equal to 8 more than or equal to 2.
A kind of series connection multichannel array Ground Penetrating Radar sequential control method is included the following steps: using above-mentioned device
(1) microcomputer issues channel number, shooting sequence, reception sequence and the relevant configuration parameter in each channel To FPGA, FPGA shooting sequence parameter and receive sequence parameter respectively be handed down to transmitting gating switch and receive gating switch, The parameter received is handed down to step motion control module, step motion control module generates the transmitting triggering to match with configuration parameter and believes Number sequence and trigger signal sequence is received, wherein transmitting trigger signal sequence is composed in series by N group transmitting trigger signal, receives and touch Signalling sequence receives trigger signal by N group and is composed in series；
(2) FPGA is controlled by synchronization signal and is gated according to channel number set by user, shooting sequence and reception sequence Switch realizes the distribution of trigger signal, when synchronization signal occurs, emits gating switch respectively by first group of transmitting trigger signal Distribute to transmitter 1, second group of transmitting trigger signal distributes to transmitter 2, and so on N group transmitting trigger signal distribute to Transmitter N, similarly receive gating switch also by receive trigger signal distribute in this manner, in this way distribute after must: a channel by Transmitter 1 and receiver 1 form, and two channels are made of transmitter 2 and receiver 2, and so on N channel by transmitter N and connect Receipts machine N composition；
(3) echo gating switch turns according to being together in series from 1 to the signal that N channel sequence receives receiver through modulus Parallel operation is sent into microcomputer, and FPGA is according to shooting sequence and receives each channel echo-signal of sequence notation, the content of label Antenna echo for the channel generated by which transmitter and which receiver, and microcomputer is according to being marked Information is corresponding to pick up every channel antenna echo and is sent to the display output of corresponding channel data display window.
Further, in step (1), the relevant configuration parameter in each channel includes time window, scan period, sample point Number.
Further, in step (1)-(3), the numerical value of N is equal, is the natural number more than or equal to 2, less than or equal to 8.
The beneficial effects of the present invention are:
Series connection multichannel array Ground Penetrating Radar time sequence control device disclosed in this invention and method, using tandem timing The N channel acquisition system of control mode is only by a step motion control module, the gating switch of an analog-digital converter and 3 roads N The antenna echo in N number of channel is together in series by composition by control gating switch, the timesharing within a scan period of each channel Work.In the case where less port number (not more than 8), component number is less, has small in size, at low cost, small power consumption The flexible feature with control can control transmitting unit and receiving unit work in array in any order.
Detailed description of the invention
Fig. 1 is the circuit connection of series connection multichannel array Ground Penetrating Radar time sequence control device disclosed in the embodiment of the present invention 1 Structural schematic diagram；
Fig. 2 is the timing control of series connection multichannel array Ground Penetrating Radar sequential control method disclosed in the embodiment of the present invention 1 Figure.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention It is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not used to limit The fixed present invention.
Embodiment 1, as shown in Figure 1, present embodiment discloses a kind of series connection multichannel array Ground Penetrating Radar timing control dresses It sets, the device includes: microcomputer, the step motion control module being electrically connected by FPGA with microcomputer, microcomputer After calculation machine issues channel relevant configured parameter to FPGA, shooting sequence parameter and reception sequence parameter are handed down to hair by FPGA respectively It penetrates gating switch and receives gating switch；The relevant configured parameter in channel is handed down to step motion control module, step motion control module It generates the transmitting trigger signal sequence to match with the channel relevant configured parameter and receives trigger signal sequence, wherein transmitting touching Signalling sequence is composed in series by transmitting trigger signal more than two, receives trigger signal sequence and triggered by reception more than two and believed It number is composed in series；The transmitting gating switch for being connected with two or more transmitters is electrically connected with FPGA, the synchronization signal from FPGA When appearance, the shooting sequence that transmitting gating switch is set according to FPGA distributes each transmitting trigger signal to corresponding transmitter, on The transmitter stated is electrically connected with array antenna, the reception gating switch for being connected with two or more receivers is electrically connected with FPGA, When synchronization signal from FPGA occurs, receives the reception sequence that gating switch is set according to FPGA and divide each reception trigger signal It is assigned to corresponding receiver, above-mentioned receiver is electrically connected with array antenna, and echo gating switch will be returned according to 1 to N sequence The series connection of wave signal, the antenna echo after series connection are converted to digital signal by analog-digital converter, and FPGA is according to shooting sequence and reception The each channel echo-signal of sequence notation, the content of label are that the antenna echo in the channel is a with which by which transmitter What receiver generated, microcomputer is according to the every channel antenna echo of the corresponding pickup of the information marked and is sent to corresponding channel number It shows and exports according to display window.
The present embodiment also discloses a kind of series connection multichannel array Ground Penetrating Radar sequential control method, and this method includes triggering The pickup of the antenna echo of the distribution and corresponding channel of signal.
The distribution of trigger signal is will to emit trigger signal by control gating switch and receive trigger signal according to user Desired order-assigned is to specified transmitter and receiver.
The pickup of the antenna echo of corresponding channel is by FPGA first to concatenated antenna echo signal subsection, then is marked logical Road information, microcomputer are corresponded to pick up every channel antenna echo and be sent to corresponding channel data according to the information marked and be shown Window.
Specifically, microcomputer issues parameter to FPGA, this parameter includes channel number, shooting sequence, reception Sequence and the relevant configuration parameter in each channel (time window, scan period, number of sampling).FPGA shooting sequence parameter and Sequence parameter is received to be handed down to transmitting gating switch respectively and receive gating switch；The relevant configured parameter in channel is handed down to step Into control module, step motion control module generates the transmitting trigger signal sequence to match with configuration parameter and receives trigger signal sequence Column.When synchronization signal occurs, three gating switch simultaneously operations, transmitting gating switch and reception gating switch are according to setting Sequence will transmitting trigger signal and receive trigger signal is assigned in specified transmitter and receiver, echo gating switch according to 1 to N sequence connects echo-signal, and the antenna echo after series connection is converted to digital signal by analog-digital converter, FPGA according to Shooting sequence and the reception each channel echo-signal of sequence notation, the content of label are that the antenna echo in the channel is a by which What transmitter and which receiver generated, microcomputer picks up every channel antenna echo simultaneously according to the information marked is corresponding It is sent to corresponding channel data display window.
As shown in Fig. 2, the parameter that step motion control module is issued according to microcomputer generates transmitting trigger signal sequence respectively Column and reception trigger signal sequence receive triggering and believe wherein transmitting trigger signal sequence is composed in series by N group transmitting trigger signal Number sequence receives trigger signal by N group and is composed in series.When synchronization signal occurs, emit gating switch respectively by first group of transmitting Trigger signal distributes to transmitter 1, and second group of transmitting trigger signal distributes to transmitter 2, and so on N group transmitting triggering letter Number distribute to transmitter N, similarly receive gating switch also and will receive trigger signal and distribute in this manner, after distributing in this way must: One channel is made of transmitter 1 and receiver 1, and two channels are made of transmitter 2 and receiver 2, and so on N channel by emitting Machine N and receiver N composition.Echo gating switch is sent and analog-to-digital conversion according to antenna echo is together in series from 1 to N channel sequence Device.Concatenated antenna echo is divided into N sections in sequence as mark using synchronization signal and picked up by microcomputer, and each section i.e. For the antenna echo in each channel, the antenna echo in each channel is then sent to corresponding channel data display window again.
Above-mentioned is the working principle of transmitter and receiver according to one-to-one correspondence sequence, any transmitter and any receiver Corresponding working principle is as follows: for example, the array antenna of a four-way, it is desirable that transmitter 1 and receiver 2 form one and lead to Road, transmitter 2 and receiver 3 form a channel, and transmitter 3 and receiver 4 form a channel, transmitter 4 and receiver 1 Form a channel.Microcomputer is given according to the job order and channel configuration parameter of required transmitter and receiver Shooting sequence parameter and reception sequence parameter are handed down to transmitting gating switch and receive gating switch by FPGA, FPGA；Channel Relevant configured parameter is handed down to step motion control module, and step motion control module generates one and is composed in series by 4 groups of transmitting trigger signals Emit trigger signal sequence and one is composed in series reception trigger signal sequence by 4 groups of reception trigger signals, synchronization signal occurs When, transmitting gating switch distributes first group of transmitting trigger signal to transmitter 1, and second group is distributed to transmitter 2, and third component is matched To transmitter 3, the 4th group is distributed to transmitter 4.It receives gating switch and first group of reception trigger signal is distributed into receiver 2, Second group is distributed to receiver 3, and third component dispensing receiver 4, the 4th group is distributed to receiver 1.After distributing in this way: first Channel is made of transmitter 1 and receiver 2, and second channel is made of transmitter 2 and receiver 3, and third channel is by 3 He of transmitter Receiver 4 forms, and fourth lane is made of transmitter 4 and receiver 1.Echo gating switch with synchronization signal be mark according to from Antenna echo is together in series by one to four channel sequence to be sent and analog-digital converter.FPGA using synchronization signal as mark in sequence Concatenated antenna echo is divided into 4 sections, respectively corresponds the antenna echo in 4 channels, path marking is added to every section of antenna echo, Mark content are as follows: the antenna echo of first passage is generated by transmitter 1 and receiver machine 2, and the antenna echo of second channel is by sending out It penetrates machine 2 and receiver 3 generates, the antenna echo of third channel is generated by transmitter 3 and receiver 4, and the antenna of fourth lane returns Wave is generated by transmitter 4 and receiver 1.Microcomputer picks up each channel antenna echo simultaneously according to the information marked is corresponding It is sent to corresponding channel data display window.Working principle as described above similarly can get and control array in any order Middle transmitting unit and the embodiment of receiving unit work.

Claims (1)

1.一种串联多通道阵列探地雷达时序控制方法，使用一种串联多通道阵列探地雷达时序控制装置，所述的装置包括：微型计算机，通过FPGA与微型计算机电连接的步进控制模块，微型计算机下发通道相关配置参数给FPGA后，FPGA把发射顺序参数和接收顺序参数分别下发给发射选通开关和接收选通开关、把通道的相关配置参数下发给步进控制模块，步进控制模块产生与该通道相关配置参数相匹配的发射触发信号序列和接收触发信号序列，其中发射触发信号序列由两组以上发射触发信号串联组成、接收触发信号序列由两组以上接收触发信号串联组成；连接有两台以上发射机的发射选通开关与FPGA电连接、来自FPGA的同步信号出现时，发射选通开关按照FPGA设定的发射顺序将各发射触发信号分配至相应发射机，上述的发射机均与阵列天线电连接，连接有两台以上接收机的接收选通开关与FPGA电连接、来自FPGA的同步信号出现时，接收选通开关按照FPGA设定的接收顺序将各接收触发信号分配至相应接收机，上述的接收机均与阵列天线电连接，回波选通开关按照顺序将来自接收机的回波信号串联，串联后的天线回波由模数转换器转换为数字信号，FPGA按照发射顺序和接收顺序标记每个通道回波信号，标记的内容为该通道的天线回波是由第几个发射机和第几个接收机产生的，微型计算机按照所标记的信息对应拾取每通道天线回波并送到对应通道数据显示窗口显示输出；所述发射机和接收机的数量相同，均为大于等于2台，小于等于8台，其特征在于，包括如下步骤：1. A serial multi-channel array ground penetrating radar timing control method, using a serial multi-channel array ground penetrating radar timing control device, the device comprises: a microcomputer, a stepping control module electrically connected to the microcomputer by FPGA , after the microcomputer sends the channel-related configuration parameters to the FPGA, the FPGA sends the transmit sequence parameters and the receive sequence parameters to the transmit gate switch and the receive gate switch respectively, and sends the channel-related configuration parameters to the stepping control module. The step control module generates a transmit trigger signal sequence and a receive trigger signal sequence that match the relevant configuration parameters of the channel, wherein the transmit trigger signal sequence is composed of more than two sets of transmit trigger signals in series, and the receive trigger signal sequence is composed of more than two groups of receive trigger signals. It is composed of series connection; the transmit gate switch connected with more than two transmitters is electrically connected to the FPGA, and when the synchronization signal from the FPGA appears, the transmit gate switch distributes each transmit trigger signal to the corresponding transmitter according to the transmit sequence set by the FPGA. The above-mentioned transmitters are all electrically connected to the array antenna, and the receiving gating switches that are connected with more than two receivers are electrically connected to the FPGA. When the synchronization signal from the FPGA appears, the receiving gating switch will receive each receiver according to the receiving sequence set by the FPGA. The trigger signal is distributed to the corresponding receiver, the above-mentioned receivers are all electrically connected to the array antenna, the echo gating switch connects the echo signals from the receiver in series in sequence, and the serially connected antenna echo is converted into digital by the analog-to-digital converter Signal, FPGA marks the echo signal of each channel according to the transmitting order and receiving order, the content of the mark is that the antenna echo of this channel is generated by the number of transmitters and the number of receivers, and the microcomputer is based on the marked information. Correspondingly pick up the antenna echo of each channel and send it to the corresponding channel data display window for display output; the number of the transmitter and the receiver is the same, both of which are greater than or equal to 2 and less than or equal to 8, and it is characterized in that, it includes the following steps: （1）微型计算机下发通道个数、发射顺序、接收顺序以及每个通道相关的配置参数给FPGA，FPGA把发射顺序参数和接收顺序参数分别下发给发射选通开关和接收选通开关、把接收到的参数下发给步进控制模块，步进控制模块产生与配置参数相匹配的发射触发信号序列和接收触发信号序列，其中发射触发信号序列由N组发射触发信号串联组成，接收触发信号序列由N组接收触发信号串联组成；(1) The microcomputer sends the number of channels, the transmitting order, the receiving order, and the configuration parameters related to each channel to the FPGA, and the FPGA sends the transmitting order parameters and the receiving order parameters to the transmitting gating switch and the receiving gating switch, respectively. The received parameters are sent to the stepping control module, and the stepping control module generates a transmit trigger signal sequence and a receive trigger signal sequence that match the configuration parameters, wherein the transmit trigger signal sequence is composed of N groups of transmit trigger signals in series, and the receive trigger signal sequence The signal sequence consists of N groups of receiving trigger signals in series; （2）FPGA按照用户设定的通道个数、发射顺序和接收顺序，通过同步信号控制选通开关实现触发信号的分配，当同步信号出现时，发射选通开关分别将第一组发射触发信号分配给发射机1，第二组发射触发信号分配给发射机2，以此类推第N组发射触发信号分配给发射机N，同理接收选通开关也将接收触发信号按照此方式分配，这样分配后得：一通道由发射机1和接收机1组成，二通道由发射机2和接收机2组成，以此类推N通道由发射机N和接收机N组成；(2) According to the number of channels, transmission order and reception order set by the user, the FPGA controls the gating switch to realize the distribution of trigger signals through the synchronization signal. When the synchronization signal appears, the transmission gating switch transmits the first group of transmission trigger signals respectively. Assigned to transmitter 1, the second group of transmit trigger signals is assigned to transmitter 2, and so on, and the Nth group of transmit trigger signals is assigned to transmitter N. Similarly, the receive gating switch will also assign receive trigger signals in this way, so that After distribution, it is obtained: the first channel is composed of transmitter 1 and receiver 1, the second channel is composed of transmitter 2 and receiver 2, and so on, the N channel is composed of transmitter N and receiver N; （3）回波选通开关按照从1到N通道顺序将接收机接收到的信号串联起来经模数转换器送入微型计算机，FPGA按照发射顺序和接收顺序标记每个通道回波信号，标记的内容为该通道的天线回波是由第几个发射机和第几个接收机产生的，微型计算机按照所标记的信息对应拾取每通道天线回波并送到对应通道数据显示窗口显示输出，在步骤（1）中，每个通道相关的配置参数包括时间窗，扫描周期，取样点数，在步骤（1）-（3）中，N的数值相等，均为大于等于2，小于等于8的自然数。(3) The echo gating switch connects the signals received by the receiver in series from 1 to N in the order of channels, and sends them to the microcomputer through the analog-to-digital converter. The FPGA marks the echo signals of each channel according to the transmitting order and receiving order. The content is that the antenna echo of this channel is generated by the transmitter and the receiver. The microcomputer picks up the antenna echo of each channel according to the marked information and sends it to the corresponding channel data display window to display the output. In step (1), the configuration parameters related to each channel include time window, scan period, and number of sampling points. In steps (1)-(3), the values of N are equal, both greater than or equal to 2 and less than or equal to 8 Natural number.
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